Once children ________ (run) and _______ (play) in the park. Then

Once children ________ (run) and
_______ (play) in the park.
Then it ____________ (be) a strange
sound in the dark corner of the park.
One boy _________ (go) to see there.
He ___________ (come) back late at
night.
He _______(say) that he __________
(see) a ghost. Помогите.
It was Halloween night so children
________ (go) trick-or-treating.
Finally, they _______(come) to the dark
old house.
Ann _______(have) a scary feeling when
she __________(see) the empty house.
Mara _______(see) a strange creature at
the window.
The children ______(be) scared and
_________(run) away home.